those RA-R brakes are porn but that is such a huge caliper for such a small pad! never seen it from that angle before

pete most decent brakes (aftermarket brembo, AP, Alcon etc) have both small and large pistons, the idea that the smaller pistons require less fluid to move and will thereforce push down before the larger pistons, this will give you a more progressive feel to the brakes, unlike equal sized large pistons which will all move at the same time giving a more on-off feel to the brakes

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MY93 Impreza GX 1.8L, 0hp, 0nm